From 819149e5ca103190672ba0944720e7a8cb9b26d0 Mon Sep 17 00:00:00 2001
From: Georg Pfuetzenreuter
Date: Mon, 9 May 2022 17:58:40 +0200
Subject: Downgrade to 2.6.7 - Init Hikari + db-scheduler

- Downgrade Spring Boot release candidate 2.7-RC1 to stable 2.6.7
- Enable Hikari with MariaDB backend
- Move application.properties values to environment variables
- Add sample scheduler service
- Move Keycloak Bean configuration to appropriately named class
- Various minor changes

Signed-off-by: Georg Pfuetzenreuter <mail@georg-pfuetzenreuter.net>
---
 .../net/libertacasa/pubsh/web/SchedulerBean.java   | 70 ++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 src/main/java/net/libertacasa/pubsh/web/SchedulerBean.java

(limited to 'src/main/java/net/libertacasa/pubsh/web/SchedulerBean.java')

diff --git a/src/main/java/net/libertacasa/pubsh/web/SchedulerBean.java b/src/main/java/net/libertacasa/pubsh/web/SchedulerBean.java
new file mode 100644
index 0000000..a4310af
--- /dev/null
+++ b/src/main/java/net/libertacasa/pubsh/web/SchedulerBean.java
@@ -0,0 +1,70 @@
+package net.libertacasa.pubsh.web;
+
+import java.time.Duration;
+import java.time.Instant;
+
+import javax.sql.DataSource;
+
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import com.github.kagkarlsson.scheduler.Scheduler;
+import com.github.kagkarlsson.scheduler.task.Task;
+import com.github.kagkarlsson.scheduler.task.helper.RecurringTask;
+import com.github.kagkarlsson.scheduler.task.helper.Tasks;
+import static com.github.kagkarlsson.scheduler.task.schedule.Schedules.fixedDelay;
+import com.github.kagkarlsson.scheduler.task.schedule.Schedules;
+
+//@Configuration
+//public class SchedulerBean {
+//
+//    public static void run() {
+//
+//        RecurringTask<Void> myTask = Tasks.recurring("my-task", FixedDelay.ofSeconds(5))
+//            .execute((inst, ctx) -> {
+//                System.out.println("Executed!");
+//            });
+//
+//        final Scheduler scheduler = Scheduler
+//            .create(DatabaseBean.dataSource())
+//            .startTasks(myTask)
+//            .pollingInterval(Duration.ofSeconds(5))
+//            .registerShutdownHook()
+//            .build();
+//
+//       scheduler.start();
+//    }
+//}
+
+@Configuration
+public class SchedulerBean {
+
+    @Bean
+    Task<Void> recurringSampleTask(CounterService counter) {
+        return Tasks
+            .recurring("recurring-sample-task", fixedDelay(Duration.ofMinutes(1)))
+            .execute((instance, ctx) -> {
+                System.out.printf("Recurring testing task. Instance: %s, ctx: %s\n", instance, ctx);
+                CounterService.increase();
+            });
+    }
+
+    @Bean
+    Task<Void> sampleOneTimeTask() {
+        return Tasks.oneTime("one-time-sample-task")
+            .execute((instance, ctx) -> {
+                System.out.printf("OK, one-shot testing task.\n");
+            });
+    }
+    
+    @Bean
+    CommandLineRunner executeOnStartup(Scheduler scheduler, Task<Void> sampleOneTimeTask) {
+        System.out.println("Scheduling one-shot testing task to execute now.");
+
+        return ignored -> scheduler.schedule(
+            sampleOneTimeTask.instance("command-line-runner"),
+            Instant.now()
+        );    
+   }
+}
-- 
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